Epcos B82731M Series Common Mode ChokesB82731M Series Current-compensated D core double chokes, the Vertical versionClosed rectangular ferrite core with 2-section windingClosed polycarbonate coil former (UL 94 V-0) without encapsulation with clearance and creepage distances ≥3 mmHigh resonance frequency due to 2-section windingApprox. 1% stray inductance for symmetrical interference suppressionLow leakage due to closed core shapeHigh pulse strengthLow whirring noiseSuitable for wave solderingApplications include, Suppression of common-mode interferences, Compact switch-mode power applications and Electronic ballasts in lamps